WN3959Southwest Airlines · SMF → PHX
live · 4m ago
Route confirmed Southwest Airlines

WN3959 SacramentoSMF · 05:35 PhoenixPHX · 07:25

WN3959 by Southwest Airlines flies from Sacramento (SMF) to Phoenix (PHX) for the Tue, Oct 20 departure.

Right nowExpected · today
05:35

departs SMF · on schedule

Typical arrival−7 minmedian over 2 operations

The route today

live boards
SMFSacramentoOn-time likelySMF delay board →
PHXPhoenixOn-time likelyPHX delay board →
SMF→PHXevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
40%Chance of 15+ min delay
0.9%Chance of cancellation
+8 minAvg hub delay right now

Conditions at SMF and PHX are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. For this route and airline, under conditions like today's, over the last 90 days.

Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →

When it flies

scheduled departures
061422
M
T
W
T
F
S
S

Each mark is a scheduled departure at its origin-local time. Today is highlighted.

Other Sacramento to Phoenix flights today

same route · Southwest Airlines
WN3993departs 07:20
WN3272departs 08:30
WN2211departs 08:45
WN1211departs 10:20
WN1280departs 11:10
WN3960departs 11:40

If WN3959 is cancelled, these are the other Southwest Airlines nonstop flights from Sacramento to Phoenix on the same day, with scheduled departure times in SMF local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →

How WN3959 actually runs

Pro Flight Search has tracked every published board update for WN3959 across the SMF and PHX boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 2 completed legs so far: landed -7 min. Not enough to call it.

The verdict above is that record speaking, so it reflects how WN3959 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocks

Board log

scheduled → actual, per operation
10-20SMF 05:35PHX 07:25 07:12 (−13)
10-19SMF PHX 07:00 06:53 (−7)

Board clocks recorded as SMF and PHX published them.

Planning around WN3959? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search — WN3959 Sacramento to Phoenix on-time performance, measured from the SMF and PHX airport boards.

Canonical URL
https://proflightsearch.com/flight/WN3959
How we measure this →